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3 years ago

Solve for x 5х – 12 = 3х + 10

Mathematics

1 answer:

Mkey [24]3 years ago

6 0

Answer:

x = 11

Step-by-step explanation:

5х – 12 = 3х + 10

Subtract 3x from both sides, since x can only be on one side

5х – 12 = 3х + 10

- 3x - 3x

------------------------

2x – 12 = 10

Add 12 to both sides, because the 12 is negative and we need the x to be alone

2x – 12 = 10

+ 12 + 12

------------------------

2x = 22

Divide both sides by 2, so we get x all by itself

2x = 22

-- --

2 2

-----------

x = 11

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What is an example of a word problem

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Phoebe bought 28 ounces of gourmet cheese for a fondue. If the cheese sells for $6.00 per pound, how much will Phoebe pay for 28 ounces of gourmet cheese?

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3 years ago

All of the following are rational numbers: .5, 7, V16 O True O False

wel

Answer:

Your answer is: A) True

( I say true because 1) .5 2) 7 are rational) ( I dont know about v16, if that is what it is supposed to say, then I cant quite tell)

A rational number is any integer, fraction, terminating decimal, or repeating decimal.

Step-by-step explanation:

Hope this helped : )

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3 years ago

Delta makes 12-volt car batteries. These batteries are known to be normally

blondinia [14]

Answer:

The probability that Delta car batteries last between three and four years

P(36≤X≤48) = 0.5188

The percentage of that Delta car batteries last between three and four years

P(3≤X≤4) = 52%

Step-by-step explanation:

Step(i):-

Given that the sample size n =12 -volt car batteries

Let 'X' be a Random variable in a normal distribution

Given that mean of the normal distribution = 45 months

Given that the Standard deviation of the normal distribution = 8months

Step(ii):-

Let X₁ = 3 years = 12 × 3 = 36 months

$Z_{1} = \frac{x_{1} -mean}{S.D} = \frac{36-45}{8} = -1.125$

Let X₂ = 4 years = 12 × 4 = 48 months

$Z_{2} = \frac{x_{2} -mean}{S.D} = \frac{48-45}{8} = 0.375$

Step(iii):-

The probability that Delta car batteries last between three and four years

P(36≤X≤48) = P(-1.125≤Z≤0.375)

= P(Z≤0.375) - P(Z≤-1.125)

= 0.5 +A(0.375) - (0.5-A(1.125)

= 0.5 + 0.1480 - (0.5 -0.3708)

= 0.1480 + 0.3708

= 0.5188

Final answer:-

The probability that Delta car batteries last between three and four years

P(36≤X≤48) = 0.5188

The percentage of that Delta car batteries last between three and four years

P(3≤X≤4) = 52%

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2 years ago

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sertanlavr [38]

Answer:

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Step-by-step explanation:

kinda self explanatory so i think its a trick question haha

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2 years ago

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Answer:

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3 years ago